579cec6a61917aaefb0cfcee5a36ed98b3dd4e3ee9027bea74bec18222da31cf

Analysis

max time kernel
132s
max time network
180s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
07/11/2022, 16:13

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General

Target

579cec6a61917aaefb0cfcee5a36ed98b3dd4e3ee9027bea74bec18222da31cf.dll
Size

610KB
MD5

05d3a276a46eb5c0afab3bac077dfad0
SHA1

a8d9af2f6ae06786759b91ec2f82ef6e91fd527c
SHA256

579cec6a61917aaefb0cfcee5a36ed98b3dd4e3ee9027bea74bec18222da31cf
SHA512

b152dcb5821e3bb9d652bfa99b66c8447a319033c7c2a3867003eae3b43686c5429b06351df6b99b00ad80d112209696fe7023a14c25b771475fb2c11f4ba6b7
SSDEEP

12288:7fG/5NwYkK19iOCr+TMoO30mYn0YaAsGxq3xM5DKTrH5gZQ2n:7fGAK19iOCr+TMoO30mYn0YaAsv3xM5J

Score

8^/10

persistence

Malware Config

Signatures

Blocklisted process makes network request 5 IoCs

flow	pid	Process
2	2020	rundll32.exe
6	2020	rundll32.exe
7	2020	rundll32.exe
9	2020	rundll32.exe
10	2020	rundll32.exe

Sets DLL path for service in the registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\.Net CLRff\Parameters\ServiceDll = "C:\\Users\\Admin\\AppData\\Local\\Temp\\579cec6a61917aaefb0cfcee5a36ed98b3dd4e3ee9027bea74bec18222da31cf.dll"	rundll32.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	1936	rundll32.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1932 wrote to memory of 1936	1932	rundll32.exe	28
PID 1932 wrote to memory of 1936	1932	rundll32.exe	28
PID 1932 wrote to memory of 1936	1932	rundll32.exe	28
PID 1932 wrote to memory of 1936	1932	rundll32.exe	28
PID 1932 wrote to memory of 1936	1932	rundll32.exe	28
PID 1932 wrote to memory of 1936	1932	rundll32.exe	28
PID 1932 wrote to memory of 1936	1932	rundll32.exe	28
PID 1480 wrote to memory of 2020	1480	svchost.exe	30
PID 1480 wrote to memory of 2020	1480	svchost.exe	30
PID 1480 wrote to memory of 2020	1480	svchost.exe	30
PID 1480 wrote to memory of 2020	1480	svchost.exe	30
PID 1480 wrote to memory of 2020	1480	svchost.exe	30
PID 1480 wrote to memory of 2020	1480	svchost.exe	30
PID 1480 wrote to memory of 2020	1480	svchost.exe	30
PID 1936 wrote to memory of 2036	1936	rundll32.exe	31
PID 1936 wrote to memory of 2036	1936	rundll32.exe	31
PID 1936 wrote to memory of 2036	1936	rundll32.exe	31
PID 1936 wrote to memory of 2036	1936	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\579cec6a61917aaefb0cfcee5a36ed98b3dd4e3ee9027bea74bec18222da31cf.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1932
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\579cec6a61917aaefb0cfcee5a36ed98b3dd4e3ee9027bea74bec18222da31cf.dll,#1
  2⤵
  - Sets DLL path for service in the registry
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1936
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c del "C:\Windows\SysWOW64\rundll32.exe" > nul
    3⤵
    PID:2036

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k ".Net CLRff"
1⤵
- Suspicious use of WriteProcessMemory
PID:1480
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe c:\users\admin\appdata\local\temp\579cec6a61917aaefb0cfcee5a36ed98b3dd4e3ee9027bea74bec18222da31cf.dll, Launch
  2⤵
  - Blocklisted process makes network request
  PID:2020

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1936-55-0x0000000075FB1000-0x0000000075FB3000-memory.dmp

Filesize
8KB

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